Molecular Modeling for Chemistry

Au

Interactive periodic table and molecular builder with advanced simulations

110M+ Molecules
118 Elements
NGSS Aligned
Offline Ready

Core Mathematics

Arrhenius Equation
k = A·e-Ea/RT
Temperature dependence of reaction rates
VSEPR Theory
Geometry = f(LP, BP)
Molecular shape prediction
Nuclear Decay
N(t) = N₀·e-λt
Exponential decay with half-life
Maxwell-Boltzmann
f(v) = 4π(m/2πkT)3/2·e-mv²/2kT
Particle velocity distribution

Core Capabilities

📊
Periodic Table
118 elements with trends and properties
🧪
Molecular Builder
Drag-and-drop bonding interface
⚡
Reaction Kinetics
Real-time collision simulation
☢️
Nuclear Decay
Radioactive decay simulation
🔍
Molecular Analysis
Detailed composition breakdown
📱
Offline Support
Works without internet connection

NGSS Alignment

HS-PS1-2
Atomic Structure
Construct and revise representations of electron configuration for atoms and ions
Periodic Table
HS-PS1-3
Molecular Structure
Plan and conduct investigations on matter properties and chemical bonding
Builder Analysis
HS-PS1-5
Reaction Kinetics
Develop a model to illustrate factors affecting reaction rates
Reactions
HS-PS1-8
Nuclear Processes
Develop models to illustrate nuclear processes
Nuclear
Made by Ky'Lin Spears · Download Source
Atoms: 0
Bonds: 0
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Controls
298 K
1.0 atm
—
No molecule selected

Inspector

Select an atom or molecule to inspect properties
bolt Reaction Kinetics
NGSS HS-PS1-5 / HS-PS1-6
Collisions
0
Reactions
0
P(react)
0%
Speed
0 u
Reaction Type
298 K
Higher T → faster particles → more collisions → higher rate
50
50
More reactant particles → more collisions → higher rate
Catalyst lowers activation energy without being consumed
Energy Diagram
Reaction Rate
Reactions Collisions
NGSS Alignment
HS-PS1-5: Effects of temperature and concentration on reaction rate
HS-PS1-6: Refining conditions to increase products at equilibrium (Le Chatelier's principle)
radio_button_checked Nuclear Decay
NGSS HS-PS1-8
Protons (Z)
92
Neutrons (N)
146
Mass (A)
238
Half-Life
4.5 Gyr
Select Isotope
Custom Isotope
Nuclear Equation
Perform a decay to see the equation
Decay Chain
NGSS Alignment
HS-PS1-8: Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.
Decay Types Reference
α Alpha Z−2, A−4 (emits ⁴He)
β⁻ Beta-minus Z+1, A same (n→p+e⁻)
β⁺ Beta-plus Z−1, A same (p→n+e⁺)
EC Electron Capture Z−1, A same
γ Gamma No Z/A change (energy)

Periodic Table

science

ATOMENCY

Interactive chemistry simulation platform built for K-12 education. Covering 118 elements, molecular building, 3D geometry, reaction kinetics, and nuclear decay — all aligned to NGSS HS-PS1 standards.

dashboard Features

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Interactive Periodic Table

All 118 elements with hover animations and detailed data panels. Explore atomic mass, electron configuration, electronegativity, ionization energy, and category groupings in an intuitive grid layout.

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Molecular Builder

Build any molecule with drag-and-drop atoms on an interactive canvas. Automatic bond formation based on valence electrons, real-time formula generation, and molecular weight calculation.

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VSEPR Geometry Visualization

3D molecular geometry prediction using VSEPR theory. Atoms snap into correct spatial arrangements — linear, trigonal planar, tetrahedral, and more — with lone pair visualization and bond angle labels.

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Molecule Inspector

Deep analysis of built molecules including partial charges, oxidation states, formal charges, and dipole moments. Click any atom to inspect its electronic environment and bonding character.

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Export / Import

Save molecular structures as PNG images or JSON data files. Import previously saved molecules with full multi-molecule support. Share your work across sessions and with classmates.

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Reaction Kinetics Simulator

Simulate chemical reactions with adjustable temperature and concentration controls. Animated particle collisions, real-time energy diagrams, activation energy visualization, and Le Chatelier's principle demonstrations.

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Nuclear Decay Simulator

Visualize alpha, beta, and gamma decay with real half-life data. Watch decay chains unfold in real time, track isotope transformations, and observe how unstable nuclei reach stability.

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Reaction Builder

Select atoms and compounds to see balanced chemical reactions and their physical outcomes. Observe state changes, energy transfer, gas evolution, and precipitate formation.

verified NGSS Standards Alignment

Atomency covers the full scope of NGSS HS-PS1: Matter and Its Interactions. The table below maps each performance expectation to the specific Atomency features that address it.

Standard Performance Expectation Atomency Feature
HS-PS1-1 Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms. Interactive Periodic Table — element cards display electron configuration, electronegativity trends, and category groupings with visual color mapping
HS-PS1-2 Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties. Molecular Builder + Reaction Builder — build molecules, observe bond formation from valence electrons, and see reaction outcomes with physical state changes
HS-PS1-3 Plan and conduct an investigation to gather evidence to compare the structure of substances at the bulk scale to infer the strength of electrical forces between particles. Molecule Inspector — partial charges, dipole moments, and electronegativity differences reveal the strength of intermolecular forces
HS-PS1-4 Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy. Reaction Kinetics Simulator — energy diagrams showing activation energy, enthalpy changes, and exothermic vs. endothermic pathways
HS-PS1-5 Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs. Reaction Kinetics Simulator — adjustable temperature and concentration sliders with real-time collision frequency and rate visualization
HS-PS1-6 Refine the design of a chemical system by specifying a change in conditions that would produce increased amounts of products at equilibrium. Reaction Kinetics Simulator — Le Chatelier's principle demonstrations showing equilibrium shifts with temperature and concentration changes
HS-PS1-7 Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction. Molecular Builder + Reaction Builder — real-time atom counts, molecular weight calculations, and balanced equation display demonstrate conservation of mass
HS-PS1-8 Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay. Nuclear Decay Simulator — alpha, beta, and gamma decay visualization with real half-life data, decay chains, and nucleus composition tracking
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Created by

Ky'lin Spears

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Terms of Use

Effective Date: Feb 12th

Welcome to Atomency.

Atomency is an educational platform designed to support instruction in chemistry and molecular modeling. By accessing or using this website, you agree to the following terms.

shield Intellectual Property

All content, software, source code, algorithms, design elements, molecular modeling systems, and related materials on this website are the intellectual property of Ky'lin Spears, unless otherwise stated.

This includes, but is not limited to:

  • The molecular modeling engine
  • Reaction simulator
  • Nuclear decay algorithms
  • Data structures and computational logic
  • User interface design and layout

Unauthorized reproduction, redistribution, modification, reverse engineering, or commercial use of this software or its components without prior written permission is strictly prohibited.

check_circle Permitted Use

Atomency may be used for educational and instructional purposes within classrooms or academic environments.

You may:

  • Access and use the platform for learning
  • Use generated molecule exports for classroom instruction

You may not:

  • Copy or replicate the source code
  • Rehost or redistribute the platform
  • Sell or license the software
  • Claim authorship of the software or its components

warning No Warranty

This platform is provided for educational use. While efforts are made to ensure accuracy and reliability, no guarantees are made regarding completeness, scientific accuracy in all edge cases, or uninterrupted availability.

block Limitation of Liability

The creator of Atomency shall not be held liable for any damages resulting from the use or inability to use this platform.

edit_note Modifications

These terms may be updated periodically. Continued use of the platform constitutes acceptance of any revised terms.

mail Contact

For permissions, academic partnerships, or inquiries, contact: help@atomency.com

© 2026 Ky'lin Spears. All rights reserved.